The 2009 Mercedes SL63 IWC refers to a limited edition version of the SL63 AMG roadster, which was a collaboration with watchmaker IWC Schaffhausen. Only 200 2009 Mercedes-Benz SL63 AMG IWC Edition models were made worldwide. Of those, 63 were offered for sale in the U.S. market. This limited-edition roadster was produced to commemorate the partnership between Mercedes-Benz and IWC Schaffhausen. It features unique design elements like the Designo Magno Cashmere matte white exterior, a special Tobago Brown and black leather interior, matte carbon fiber trim, and IWC branding on the door sills and near the climate controls. Exterior and performance Engine: A 6.2-liter V8 engine with 518 horsepower and 465 lb-ft of torque. Transmission: A 7-speed AMG Speedshift MCT transmission. Color: Designo Magno Cashmere White (matte white). Package: Includes the AMG Exterior Carbon Fiber Package. Interior and features Upholstery: Black and Tobago Brown AMG Premium leather. Trim: Matte carbon fiber trim and illuminated door sills. Branding: IWC logos near the climate controls and on the illuminated door sills. Seating: Heated and ventilated multicontour seats with Airscarf neck warmers. Audio: Harman Kardon sound system. Infotainment: COMAND infotainment system with navigation. Keyless entry: Keyless-GO. Additional details Watch: Each car was sold with a matching, limited-edition IWC Grosser Ingenieur wristwatch. Production: Only 200 of these special editions were produced.